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Finding the Fourth Proportional to 316,430.15, 436,672.01 and 171,235.82

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Solution

The fourth proportional to 316,430.15, 436,672.01 and 171,235.82 is: 236,304.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,430.15 : 436,672.01 = 171,235.82 : x
  2. Step 2: Convert to fraction form
    316,430.15/436,672.01 = 171,235.82/x
  3. Step 3: Cross multiply
    316,430.15x = 436,672.01 × 171,235.82
  4. Step 4: Simplify right side
    316,430.15x = 74,773,891,223.17
  5. Step 5: Solve for x
    x = 74,773,891,223.17/316,430.15
  6. Step 6: Final answer
    x = 236,304.58

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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.