Home / 438,121.40-657,182.10-288,530.60

Finding the Fourth Proportional to 438,121.40, 657,182.10 and 288,530.60

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Solution

The fourth proportional to 438,121.40, 657,182.10 and 288,530.60 is: 432,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,121.40 : 657,182.10 = 288,530.60 : x
  2. Step 2: Convert to fraction form
    438,121.40/657,182.10 = 288,530.60/x
  3. Step 3: Cross multiply
    438,121.40x = 657,182.10 × 288,530.60
  4. Step 4: Simplify right side
    438,121.40x = 189,617,145,622.26
  5. Step 5: Solve for x
    x = 189,617,145,622.26/438,121.40
  6. Step 6: Final answer
    x = 432,795.90

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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.