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Finding the Fourth Proportional to 387,706.50, 581,559.75 and 107,223.75

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Solution

The fourth proportional to 387,706.50, 581,559.75 and 107,223.75 is: 160,835.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,706.50 : 581,559.75 = 107,223.75 : x
  2. Step 2: Convert to fraction form
    387,706.50/581,559.75 = 107,223.75/x
  3. Step 3: Cross multiply
    387,706.50x = 581,559.75 × 107,223.75
  4. Step 4: Simplify right side
    387,706.50x = 62,357,017,244.06
  5. Step 5: Solve for x
    x = 62,357,017,244.06/387,706.50
  6. Step 6: Final answer
    x = 160,835.63

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Similar ratio
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1.5x scale

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.