Home / 213,870.30-320,805.45-147,515.10

Finding the Fourth Proportional to 213,870.30, 320,805.45 and 147,515.10

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Solution

The fourth proportional to 213,870.30, 320,805.45 and 147,515.10 is: 221,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,870.30 : 320,805.45 = 147,515.10 : x
  2. Step 2: Convert to fraction form
    213,870.30/320,805.45 = 147,515.10/x
  3. Step 3: Cross multiply
    213,870.30x = 320,805.45 × 147,515.10
  4. Step 4: Simplify right side
    213,870.30x = 47,323,648,037.30
  5. Step 5: Solve for x
    x = 47,323,648,037.30/213,870.30
  6. Step 6: Final answer
    x = 221,272.65

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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.