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Finding the Fourth Proportional to 385,363.20, 578,044.80 and 346,094.40

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Solution

The fourth proportional to 385,363.20, 578,044.80 and 346,094.40 is: 519,141.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,363.20 : 578,044.80 = 346,094.40 : x
  2. Step 2: Convert to fraction form
    385,363.20/578,044.80 = 346,094.40/x
  3. Step 3: Cross multiply
    385,363.20x = 578,044.80 × 346,094.40
  4. Step 4: Simplify right side
    385,363.20x = 200,058,068,229.12
  5. Step 5: Solve for x
    x = 200,058,068,229.12/385,363.20
  6. Step 6: Final answer
    x = 519,141.60

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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.