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Finding the Fourth Proportional to 373,689.32, 515,708.06 and 210,402.04

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Solution

The fourth proportional to 373,689.32, 515,708.06 and 210,402.04 is: 290,364.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,689.32 : 515,708.06 = 210,402.04 : x
  2. Step 2: Convert to fraction form
    373,689.32/515,708.06 = 210,402.04/x
  3. Step 3: Cross multiply
    373,689.32x = 515,708.06 × 210,402.04
  4. Step 4: Simplify right side
    373,689.32x = 108,506,028,706.73
  5. Step 5: Solve for x
    x = 108,506,028,706.73/373,689.32
  6. Step 6: Final answer
    x = 290,364.28

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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.