Home / 287,820.12-397,192.71-160,503.92

Finding the Fourth Proportional to 287,820.12, 397,192.71 and 160,503.92

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Solution

The fourth proportional to 287,820.12, 397,192.71 and 160,503.92 is: 221,495.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,820.12 : 397,192.71 = 160,503.92 : x
  2. Step 2: Convert to fraction form
    287,820.12/397,192.71 = 160,503.92/x
  3. Step 3: Cross multiply
    287,820.12x = 397,192.71 × 160,503.92
  4. Step 4: Simplify right side
    287,820.12x = 63,750,986,950.42
  5. Step 5: Solve for x
    x = 63,750,986,950.42/287,820.12
  6. Step 6: Final answer
    x = 221,495.94

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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.