Home / 287,920.76-397,328.02-158,860.42

Finding the Fourth Proportional to 287,920.76, 397,328.02 and 158,860.42

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Solution

The fourth proportional to 287,920.76, 397,328.02 and 158,860.42 is: 219,225.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,920.76 : 397,328.02 = 158,860.42 : x
  2. Step 2: Convert to fraction form
    287,920.76/397,328.02 = 158,860.42/x
  3. Step 3: Cross multiply
    287,920.76x = 397,328.02 × 158,860.42
  4. Step 4: Simplify right side
    287,920.76x = 63,119,695,340.67
  5. Step 5: Solve for x
    x = 63,119,695,340.67/287,920.76
  6. Step 6: Final answer
    x = 219,225.93

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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.