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Finding the Fourth Proportional to 438,159.78, 604,688.49 and 247,103.46

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Solution

The fourth proportional to 438,159.78, 604,688.49 and 247,103.46 is: 341,018.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,159.78 : 604,688.49 = 247,103.46 : x
  2. Step 2: Convert to fraction form
    438,159.78/604,688.49 = 247,103.46/x
  3. Step 3: Cross multiply
    438,159.78x = 604,688.49 × 247,103.46
  4. Step 4: Simplify right side
    438,159.78x = 149,420,618,101.18
  5. Step 5: Solve for x
    x = 149,420,618,101.18/438,159.78
  6. Step 6: Final answer
    x = 341,018.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.