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Finding the Fourth Proportional to 553,621.80, 830,432.70 and 301,023.30

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Solution

The fourth proportional to 553,621.80, 830,432.70 and 301,023.30 is: 451,534.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,621.80 : 830,432.70 = 301,023.30 : x
  2. Step 2: Convert to fraction form
    553,621.80/830,432.70 = 301,023.30/x
  3. Step 3: Cross multiply
    553,621.80x = 830,432.70 × 301,023.30
  4. Step 4: Simplify right side
    553,621.80x = 249,979,591,781.91
  5. Step 5: Solve for x
    x = 249,979,591,781.91/553,621.80
  6. Step 6: Final answer
    x = 451,534.95

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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.