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Finding the Fourth Proportional to 524,497.40, 786,746.10 and 145,417.40

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Solution

The fourth proportional to 524,497.40, 786,746.10 and 145,417.40 is: 218,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,497.40 : 786,746.10 = 145,417.40 : x
  2. Step 2: Convert to fraction form
    524,497.40/786,746.10 = 145,417.40/x
  3. Step 3: Cross multiply
    524,497.40x = 786,746.10 × 145,417.40
  4. Step 4: Simplify right side
    524,497.40x = 114,406,572,322.14
  5. Step 5: Solve for x
    x = 114,406,572,322.14/524,497.40
  6. Step 6: Final answer
    x = 218,126.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.