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Finding the Fourth Proportional to 371,089.80, 512,152.15 and 207,808.47

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Solution

The fourth proportional to 371,089.80, 512,152.15 and 207,808.47 is: 286,802.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,089.80 : 512,152.15 = 207,808.47 : x
  2. Step 2: Convert to fraction form
    371,089.80/512,152.15 = 207,808.47/x
  3. Step 3: Cross multiply
    371,089.80x = 512,152.15 × 207,808.47
  4. Step 4: Simplify right side
    371,089.80x = 106,429,554,698.71
  5. Step 5: Solve for x
    x = 106,429,554,698.71/371,089.80
  6. Step 6: Final answer
    x = 286,802.69

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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.