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Finding the Fourth Proportional to 554,401.80, 831,602.70 and 239,214.60

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Solution

The fourth proportional to 554,401.80, 831,602.70 and 239,214.60 is: 358,821.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,401.80 : 831,602.70 = 239,214.60 : x
  2. Step 2: Convert to fraction form
    554,401.80/831,602.70 = 239,214.60/x
  3. Step 3: Cross multiply
    554,401.80x = 831,602.70 × 239,214.60
  4. Step 4: Simplify right side
    554,401.80x = 198,931,507,239.42
  5. Step 5: Solve for x
    x = 198,931,507,239.42/554,401.80
  6. Step 6: Final answer
    x = 358,821.90

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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.