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Finding the Fourth Proportional to 313,670.49, 432,866.88 and 170,430.90

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Solution

The fourth proportional to 313,670.49, 432,866.88 and 170,430.90 is: 235,195.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,670.49 : 432,866.88 = 170,430.90 : x
  2. Step 2: Convert to fraction form
    313,670.49/432,866.88 = 170,430.90/x
  3. Step 3: Cross multiply
    313,670.49x = 432,866.88 × 170,430.90
  4. Step 4: Simplify right side
    313,670.49x = 73,773,891,938.59
  5. Step 5: Solve for x
    x = 73,773,891,938.59/313,670.49
  6. Step 6: Final answer
    x = 235,195.51

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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.