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Finding the Fourth Proportional to 356,004.72, 534,007.08 and 145,557

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Solution

The fourth proportional to 356,004.72, 534,007.08 and 145,557 is: 218,335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,004.72 : 534,007.08 = 145,557 : x
  2. Step 2: Convert to fraction form
    356,004.72/534,007.08 = 145,557/x
  3. Step 3: Cross multiply
    356,004.72x = 534,007.08 × 145,557
  4. Step 4: Simplify right side
    356,004.72x = 77,728,468,543.56
  5. Step 5: Solve for x
    x = 77,728,468,543.56/356,004.72
  6. Step 6: Final answer
    x = 218,335.50

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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.