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Finding the Fourth Proportional to 385,397.60, 578,096.40 and 104,914.40

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Solution

The fourth proportional to 385,397.60, 578,096.40 and 104,914.40 is: 157,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,397.60 : 578,096.40 = 104,914.40 : x
  2. Step 2: Convert to fraction form
    385,397.60/578,096.40 = 104,914.40/x
  3. Step 3: Cross multiply
    385,397.60x = 578,096.40 × 104,914.40
  4. Step 4: Simplify right side
    385,397.60x = 60,650,636,948.16
  5. Step 5: Solve for x
    x = 60,650,636,948.16/385,397.60
  6. Step 6: Final answer
    x = 157,371.60

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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.