Home / 438,420.15-657,466.20-154,000.80

Finding the Fourth Proportional to 438,420.15, 657,466.20 and 154,000.80

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Solution

The fourth proportional to 438,420.15, 657,466.20 and 154,000.80 is: 230,943.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,420.15 : 657,466.20 = 154,000.80 : x
  2. Step 2: Convert to fraction form
    438,420.15/657,466.20 = 154,000.80/x
  3. Step 3: Cross multiply
    438,420.15x = 657,466.20 × 154,000.80
  4. Step 4: Simplify right side
    438,420.15x = 101,250,320,772.96
  5. Step 5: Solve for x
    x = 101,250,320,772.96/438,420.15
  6. Step 6: Final answer
    x = 230,943.58

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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.