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Finding the Fourth Proportional to 423,870.76, 585,042.11 and 242,686.92

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Solution

The fourth proportional to 423,870.76, 585,042.11 and 242,686.92 is: 334,965.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,870.76 : 585,042.11 = 242,686.92 : x
  2. Step 2: Convert to fraction form
    423,870.76/585,042.11 = 242,686.92/x
  3. Step 3: Cross multiply
    423,870.76x = 585,042.11 × 242,686.92
  4. Step 4: Simplify right side
    423,870.76x = 141,982,067,746.20
  5. Step 5: Solve for x
    x = 141,982,067,746.20/423,870.76
  6. Step 6: Final answer
    x = 334,965.47

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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.