Home / 221,437.10-332,155.65-81,250.40

Finding the Fourth Proportional to 221,437.10, 332,155.65 and 81,250.40

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Solution

The fourth proportional to 221,437.10, 332,155.65 and 81,250.40 is: 121,875.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,437.10 : 332,155.65 = 81,250.40 : x
  2. Step 2: Convert to fraction form
    221,437.10/332,155.65 = 81,250.40/x
  3. Step 3: Cross multiply
    221,437.10x = 332,155.65 × 81,250.40
  4. Step 4: Simplify right side
    221,437.10x = 26,987,779,424.76
  5. Step 5: Solve for x
    x = 26,987,779,424.76/221,437.10
  6. Step 6: Final answer
    x = 121,875.60

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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.