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Finding the Fourth Proportional to 372,677.74, 514,307.81 and 209,362.90

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Solution

The fourth proportional to 372,677.74, 514,307.81 and 209,362.90 is: 288,927.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,677.74 : 514,307.81 = 209,362.90 : x
  2. Step 2: Convert to fraction form
    372,677.74/514,307.81 = 209,362.90/x
  3. Step 3: Cross multiply
    372,677.74x = 514,307.81 × 209,362.90
  4. Step 4: Simplify right side
    372,677.74x = 107,676,974,594.25
  5. Step 5: Solve for x
    x = 107,676,974,594.25/372,677.74
  6. Step 6: Final answer
    x = 288,927.84

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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.