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Finding the Fourth Proportional to 285,809.90, 394,411.82 and 158,482.76

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Solution

The fourth proportional to 285,809.90, 394,411.82 and 158,482.76 is: 218,702.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,809.90 : 394,411.82 = 158,482.76 : x
  2. Step 2: Convert to fraction form
    285,809.90/394,411.82 = 158,482.76/x
  3. Step 3: Cross multiply
    285,809.90x = 394,411.82 × 158,482.76
  4. Step 4: Simplify right side
    285,809.90x = 62,507,473,810.22
  5. Step 5: Solve for x
    x = 62,507,473,810.22/285,809.90
  6. Step 6: Final answer
    x = 218,702.97

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1.5x scale

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.