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Finding the Fourth Proportional to 388,851.30, 583,276.95 and 108,368.55

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Solution

The fourth proportional to 388,851.30, 583,276.95 and 108,368.55 is: 162,552.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,851.30 : 583,276.95 = 108,368.55 : x
  2. Step 2: Convert to fraction form
    388,851.30/583,276.95 = 108,368.55/x
  3. Step 3: Cross multiply
    388,851.30x = 583,276.95 × 108,368.55
  4. Step 4: Simplify right side
    388,851.30x = 63,208,877,319.92
  5. Step 5: Solve for x
    x = 63,208,877,319.92/388,851.30
  6. Step 6: Final answer
    x = 162,552.83

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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.