Home / 297,029.20-445,543.80-86,688.40

Finding the Fourth Proportional to 297,029.20, 445,543.80 and 86,688.40

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Solution

The fourth proportional to 297,029.20, 445,543.80 and 86,688.40 is: 130,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,029.20 : 445,543.80 = 86,688.40 : x
  2. Step 2: Convert to fraction form
    297,029.20/445,543.80 = 86,688.40/x
  3. Step 3: Cross multiply
    297,029.20x = 445,543.80 × 86,688.40
  4. Step 4: Simplify right side
    297,029.20x = 38,623,479,151.92
  5. Step 5: Solve for x
    x = 38,623,479,151.92/297,029.20
  6. Step 6: Final answer
    x = 130,032.60

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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.