Home / 257,030.20-385,545.30-70,041.70

Finding the Fourth Proportional to 257,030.20, 385,545.30 and 70,041.70

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Solution

The fourth proportional to 257,030.20, 385,545.30 and 70,041.70 is: 105,062.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,030.20 : 385,545.30 = 70,041.70 : x
  2. Step 2: Convert to fraction form
    257,030.20/385,545.30 = 70,041.70/x
  3. Step 3: Cross multiply
    257,030.20x = 385,545.30 × 70,041.70
  4. Step 4: Simplify right side
    257,030.20x = 27,004,248,239.01
  5. Step 5: Solve for x
    x = 27,004,248,239.01/257,030.20
  6. Step 6: Final answer
    x = 105,062.55

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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.