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Finding the Fourth Proportional to 424,216.80, 636,325.20 and 187,437.60

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Solution

The fourth proportional to 424,216.80, 636,325.20 and 187,437.60 is: 281,156.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,216.80 : 636,325.20 = 187,437.60 : x
  2. Step 2: Convert to fraction form
    424,216.80/636,325.20 = 187,437.60/x
  3. Step 3: Cross multiply
    424,216.80x = 636,325.20 × 187,437.60
  4. Step 4: Simplify right side
    424,216.80x = 119,271,268,307.52
  5. Step 5: Solve for x
    x = 119,271,268,307.52/424,216.80
  6. Step 6: Final answer
    x = 281,156.40

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1.5x scale

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.