Home / 438,811.40-658,217.10-143,323.40

Finding the Fourth Proportional to 438,811.40, 658,217.10 and 143,323.40

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Solution

The fourth proportional to 438,811.40, 658,217.10 and 143,323.40 is: 214,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,811.40 : 658,217.10 = 143,323.40 : x
  2. Step 2: Convert to fraction form
    438,811.40/658,217.10 = 143,323.40/x
  3. Step 3: Cross multiply
    438,811.40x = 658,217.10 × 143,323.40
  4. Step 4: Simplify right side
    438,811.40x = 94,337,912,710.14
  5. Step 5: Solve for x
    x = 94,337,912,710.14/438,811.40
  6. Step 6: Final answer
    x = 214,985.10

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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.