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Finding the Fourth Proportional to 524,400.90, 786,599.10 and 145,320.54

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Solution

The fourth proportional to 524,400.90, 786,599.10 and 145,320.54 is: 217,980.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,400.90 : 786,599.10 = 145,320.54 : x
  2. Step 2: Convert to fraction form
    524,400.90/786,599.10 = 145,320.54/x
  3. Step 3: Cross multiply
    524,400.90x = 786,599.10 × 145,320.54
  4. Step 4: Simplify right side
    524,400.90x = 114,309,005,975.51
  5. Step 5: Solve for x
    x = 114,309,005,975.51/524,400.90
  6. Step 6: Final answer
    x = 217,980.19

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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.