Home / 359,688.40-496,065.27-216,421.72

Finding the Fourth Proportional to 359,688.40, 496,065.27 and 216,421.72

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Solution

The fourth proportional to 359,688.40, 496,065.27 and 216,421.72 is: 298,478.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,688.40 : 496,065.27 = 216,421.72 : x
  2. Step 2: Convert to fraction form
    359,688.40/496,065.27 = 216,421.72/x
  3. Step 3: Cross multiply
    359,688.40x = 496,065.27 × 216,421.72
  4. Step 4: Simplify right side
    359,688.40x = 107,359,298,965.66
  5. Step 5: Solve for x
    x = 107,359,298,965.66/359,688.40
  6. Step 6: Final answer
    x = 298,478.62

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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.