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Finding the Fourth Proportional to 372,637.80, 558,956.70 and 260,080.20

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Solution

The fourth proportional to 372,637.80, 558,956.70 and 260,080.20 is: 390,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,637.80 : 558,956.70 = 260,080.20 : x
  2. Step 2: Convert to fraction form
    372,637.80/558,956.70 = 260,080.20/x
  3. Step 3: Cross multiply
    372,637.80x = 558,956.70 × 260,080.20
  4. Step 4: Simplify right side
    372,637.80x = 145,373,570,327.34
  5. Step 5: Solve for x
    x = 145,373,570,327.34/372,637.80
  6. Step 6: Final answer
    x = 390,120.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.