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Finding the Fourth Proportional to 425,208.78, 586,829.61 and 317,592.18

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Solution

The fourth proportional to 425,208.78, 586,829.61 and 317,592.18 is: 438,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,208.78 : 586,829.61 = 317,592.18 : x
  2. Step 2: Convert to fraction form
    425,208.78/586,829.61 = 317,592.18/x
  3. Step 3: Cross multiply
    425,208.78x = 586,829.61 × 317,592.18
  4. Step 4: Simplify right side
    425,208.78x = 186,372,495,128.45
  5. Step 5: Solve for x
    x = 186,372,495,128.45/425,208.78
  6. Step 6: Final answer
    x = 438,308.20

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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.