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Finding the Fourth Proportional to 317,810.88, 438,117.12 and 222,020.28

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Solution

The fourth proportional to 317,810.88, 438,117.12 and 222,020.28 is: 306,065.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,810.88 : 438,117.12 = 222,020.28 : x
  2. Step 2: Convert to fraction form
    317,810.88/438,117.12 = 222,020.28/x
  3. Step 3: Cross multiply
    317,810.88x = 438,117.12 × 222,020.28
  4. Step 4: Simplify right side
    317,810.88x = 97,270,885,655.19
  5. Step 5: Solve for x
    x = 97,270,885,655.19/317,810.88
  6. Step 6: Final answer
    x = 306,065.31

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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.