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Finding the Fourth Proportional to 524,322.40, 786,339.96 and 145,152.40

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Solution

The fourth proportional to 524,322.40, 786,339.96 and 145,152.40 is: 217,688.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,322.40 : 786,339.96 = 145,152.40 : x
  2. Step 2: Convert to fraction form
    524,322.40/786,339.96 = 145,152.40/x
  3. Step 3: Cross multiply
    524,322.40x = 786,339.96 × 145,152.40
  4. Step 4: Simplify right side
    524,322.40x = 114,139,132,409.90
  5. Step 5: Solve for x
    x = 114,139,132,409.90/524,322.40
  6. Step 6: Final answer
    x = 217,688.83

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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.