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Finding the Fourth Proportional to 388,802.88, 583,237.73 and 108,320.13

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Solution

The fourth proportional to 388,802.88, 583,237.73 and 108,320.13 is: 162,489.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,802.88 : 583,237.73 = 108,320.13 : x
  2. Step 2: Convert to fraction form
    388,802.88/583,237.73 = 108,320.13/x
  3. Step 3: Cross multiply
    388,802.88x = 583,237.73 × 108,320.13
  4. Step 4: Simplify right side
    388,802.88x = 63,176,386,734.50
  5. Step 5: Solve for x
    x = 63,176,386,734.50/388,802.88
  6. Step 6: Final answer
    x = 162,489.50

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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.