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Finding the Fourth Proportional to 402,771.40, 555,686.10 and 249,754.60

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Solution

The fourth proportional to 402,771.40, 555,686.10 and 249,754.60 is: 344,575.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,771.40 : 555,686.10 = 249,754.60 : x
  2. Step 2: Convert to fraction form
    402,771.40/555,686.10 = 249,754.60/x
  3. Step 3: Cross multiply
    402,771.40x = 555,686.10 × 249,754.60
  4. Step 4: Simplify right side
    402,771.40x = 138,785,159,631.06
  5. Step 5: Solve for x
    x = 138,785,159,631.06/402,771.40
  6. Step 6: Final answer
    x = 344,575.51

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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.