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Finding the Fourth Proportional to 389,624.53, 537,676.58 and 217,545.14

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Solution

The fourth proportional to 389,624.53, 537,676.58 and 217,545.14 is: 300,209.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,624.53 : 537,676.58 = 217,545.14 : x
  2. Step 2: Convert to fraction form
    389,624.53/537,676.58 = 217,545.14/x
  3. Step 3: Cross multiply
    389,624.53x = 537,676.58 × 217,545.14
  4. Step 4: Simplify right side
    389,624.53x = 116,968,926,870.82
  5. Step 5: Solve for x
    x = 116,968,926,870.82/389,624.53
  6. Step 6: Final answer
    x = 300,209.35

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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.