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Finding the Fourth Proportional to 440,058.93, 607,085.95 and 287,061.88

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Solution

The fourth proportional to 440,058.93, 607,085.95 and 287,061.88 is: 396,017.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,058.93 : 607,085.95 = 287,061.88 : x
  2. Step 2: Convert to fraction form
    440,058.93/607,085.95 = 287,061.88/x
  3. Step 3: Cross multiply
    440,058.93x = 607,085.95 × 287,061.88
  4. Step 4: Simplify right side
    440,058.93x = 174,271,234,128.59
  5. Step 5: Solve for x
    x = 174,271,234,128.59/440,058.93
  6. Step 6: Final answer
    x = 396,017.95

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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.