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Finding the Fourth Proportional to 216,510.65, 325,060.47 and 121,807.47

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Solution

The fourth proportional to 216,510.65, 325,060.47 and 121,807.47 is: 182,876.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,510.65 : 325,060.47 = 121,807.47 : x
  2. Step 2: Convert to fraction form
    216,510.65/325,060.47 = 121,807.47/x
  3. Step 3: Cross multiply
    216,510.65x = 325,060.47 × 121,807.47
  4. Step 4: Simplify right side
    216,510.65x = 39,594,793,447.71
  5. Step 5: Solve for x
    x = 39,594,793,447.71/216,510.65
  6. Step 6: Final answer
    x = 182,876.89

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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.