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Finding the Fourth Proportional to 358,807.20, 537,510.72 and 218,217.12

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Solution

The fourth proportional to 358,807.20, 537,510.72 and 218,217.12 is: 326,899.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,807.20 : 537,510.72 = 218,217.12 : x
  2. Step 2: Convert to fraction form
    358,807.20/537,510.72 = 218,217.12/x
  3. Step 3: Cross multiply
    358,807.20x = 537,510.72 × 218,217.12
  4. Step 4: Simplify right side
    358,807.20x = 117,294,041,287.53
  5. Step 5: Solve for x
    x = 117,294,041,287.53/358,807.20
  6. Step 6: Final answer
    x = 326,899.91

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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.