Home / 260,147.07-390,220.70-73,158.57

Finding the Fourth Proportional to 260,147.07, 390,220.70 and 73,158.57

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Solution

The fourth proportional to 260,147.07, 390,220.70 and 73,158.57 is: 109,737.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,147.07 : 390,220.70 = 73,158.57 : x
  2. Step 2: Convert to fraction form
    260,147.07/390,220.70 = 73,158.57/x
  3. Step 3: Cross multiply
    260,147.07x = 390,220.70 × 73,158.57
  4. Step 4: Simplify right side
    260,147.07x = 28,547,988,030.61
  5. Step 5: Solve for x
    x = 28,547,988,030.61/260,147.07
  6. Step 6: Final answer
    x = 109,737.88

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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.