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Finding the Fourth Proportional to 287,776.04, 397,125.50 and 158,726.52

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Solution

The fourth proportional to 287,776.04, 397,125.50 and 158,726.52 is: 219,039.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,776.04 : 397,125.50 = 158,726.52 : x
  2. Step 2: Convert to fraction form
    287,776.04/397,125.50 = 158,726.52/x
  3. Step 3: Cross multiply
    287,776.04x = 397,125.50 × 158,726.52
  4. Step 4: Simplify right side
    287,776.04x = 63,034,347,824.63
  5. Step 5: Solve for x
    x = 63,034,347,824.63/287,776.04
  6. Step 6: Final answer
    x = 219,039.60

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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.