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Finding the Fourth Proportional to 369,086.80, 553,192.80 and 191,502.40

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Solution

The fourth proportional to 369,086.80, 553,192.80 and 191,502.40 is: 287,026.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,086.80 : 553,192.80 = 191,502.40 : x
  2. Step 2: Convert to fraction form
    369,086.80/553,192.80 = 191,502.40/x
  3. Step 3: Cross multiply
    369,086.80x = 553,192.80 × 191,502.40
  4. Step 4: Simplify right side
    369,086.80x = 105,937,748,862.72
  5. Step 5: Solve for x
    x = 105,937,748,862.72/369,086.80
  6. Step 6: Final answer
    x = 287,026.65

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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.