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Finding the Fourth Proportional to 579,688.60, 869,532.90 and 158,963.80

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Solution

The fourth proportional to 579,688.60, 869,532.90 and 158,963.80 is: 238,445.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,688.60 : 869,532.90 = 158,963.80 : x
  2. Step 2: Convert to fraction form
    579,688.60/869,532.90 = 158,963.80/x
  3. Step 3: Cross multiply
    579,688.60x = 869,532.90 × 158,963.80
  4. Step 4: Simplify right side
    579,688.60x = 138,224,254,009.02
  5. Step 5: Solve for x
    x = 138,224,254,009.02/579,688.60
  6. Step 6: Final answer
    x = 238,445.70

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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.