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Finding the Fourth Proportional to 402,172.56, 555,258.24 and 249,403.32

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Solution

The fourth proportional to 402,172.56, 555,258.24 and 249,403.32 is: 344,337.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,172.56 : 555,258.24 = 249,403.32 : x
  2. Step 2: Convert to fraction form
    402,172.56/555,258.24 = 249,403.32/x
  3. Step 3: Cross multiply
    402,172.56x = 555,258.24 × 249,403.32
  4. Step 4: Simplify right side
    402,172.56x = 138,483,248,513.36
  5. Step 5: Solve for x
    x = 138,483,248,513.36/402,172.56
  6. Step 6: Final answer
    x = 344,337.88

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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.