Home / 316,275.90-436,641.20-209,156.64

Finding the Fourth Proportional to 316,275.90, 436,641.20 and 209,156.64

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Solution

The fourth proportional to 316,275.90, 436,641.20 and 209,156.64 is: 288,755.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,275.90 : 436,641.20 = 209,156.64 : x
  2. Step 2: Convert to fraction form
    316,275.90/436,641.20 = 209,156.64/x
  3. Step 3: Cross multiply
    316,275.90x = 436,641.20 × 209,156.64
  4. Step 4: Simplify right side
    316,275.90x = 91,326,406,277.57
  5. Step 5: Solve for x
    x = 91,326,406,277.57/316,275.90
  6. Step 6: Final answer
    x = 288,755.50

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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.