Home / 287,775.45-397,132.47-160,459.65

Finding the Fourth Proportional to 287,775.45, 397,132.47 and 160,459.65

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Solution

The fourth proportional to 287,775.45, 397,132.47 and 160,459.65 is: 221,435.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,775.45 : 397,132.47 = 160,459.65 : x
  2. Step 2: Convert to fraction form
    287,775.45/397,132.47 = 160,459.65/x
  3. Step 3: Cross multiply
    287,775.45x = 397,132.47 × 160,459.65
  4. Step 4: Simplify right side
    287,775.45x = 63,723,737,139.84
  5. Step 5: Solve for x
    x = 63,723,737,139.84/287,775.45
  6. Step 6: Final answer
    x = 221,435.63

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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.