Home / 371,401.28-512,545.52-210,253.40

Finding the Fourth Proportional to 371,401.28, 512,545.52 and 210,253.40

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Solution

The fourth proportional to 371,401.28, 512,545.52 and 210,253.40 is: 290,156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,401.28 : 512,545.52 = 210,253.40 : x
  2. Step 2: Convert to fraction form
    371,401.28/512,545.52 = 210,253.40/x
  3. Step 3: Cross multiply
    371,401.28x = 512,545.52 × 210,253.40
  4. Step 4: Simplify right side
    371,401.28x = 107,764,438,234.77
  5. Step 5: Solve for x
    x = 107,764,438,234.77/371,401.28
  6. Step 6: Final answer
    x = 290,156.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.