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Finding the Fourth Proportional to 402,123.80, 555,190.66 and 249,324.32

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Solution

The fourth proportional to 402,123.80, 555,190.66 and 249,324.32 is: 344,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,123.80 : 555,190.66 = 249,324.32 : x
  2. Step 2: Convert to fraction form
    402,123.80/555,190.66 = 249,324.32/x
  3. Step 3: Cross multiply
    402,123.80x = 555,190.66 × 249,324.32
  4. Step 4: Simplify right side
    402,123.80x = 138,422,533,774.85
  5. Step 5: Solve for x
    x = 138,422,533,774.85/402,123.80
  6. Step 6: Final answer
    x = 344,228.65

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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.