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Finding the Fourth Proportional to 285,681.67, 428,500.02 and 143,382.08

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Solution

The fourth proportional to 285,681.67, 428,500.02 and 143,382.08 is: 215,061.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,681.67 : 428,500.02 = 143,382.08 : x
  2. Step 2: Convert to fraction form
    285,681.67/428,500.02 = 143,382.08/x
  3. Step 3: Cross multiply
    285,681.67x = 428,500.02 × 143,382.08
  4. Step 4: Simplify right side
    285,681.67x = 61,439,225,756.57
  5. Step 5: Solve for x
    x = 61,439,225,756.57/285,681.67
  6. Step 6: Final answer
    x = 215,061.84

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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.