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Finding the Fourth Proportional to 425,933.78, 638,762.47 and 141,547.91

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Solution

The fourth proportional to 425,933.78, 638,762.47 and 141,547.91 is: 212,275.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,933.78 : 638,762.47 = 141,547.91 : x
  2. Step 2: Convert to fraction form
    425,933.78/638,762.47 = 141,547.91/x
  3. Step 3: Cross multiply
    425,933.78x = 638,762.47 × 141,547.91
  4. Step 4: Simplify right side
    425,933.78x = 90,415,489,863.46
  5. Step 5: Solve for x
    x = 90,415,489,863.46/425,933.78
  6. Step 6: Final answer
    x = 212,275.93

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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.