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Finding the Fourth Proportional to 317,547.98, 438,216.84 and 188,512.34

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Solution

The fourth proportional to 317,547.98, 438,216.84 and 188,512.34 is: 260,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,547.98 : 438,216.84 = 188,512.34 : x
  2. Step 2: Convert to fraction form
    317,547.98/438,216.84 = 188,512.34/x
  3. Step 3: Cross multiply
    317,547.98x = 438,216.84 × 188,512.34
  4. Step 4: Simplify right side
    317,547.98x = 82,609,281,507.40
  5. Step 5: Solve for x
    x = 82,609,281,507.40/317,547.98
  6. Step 6: Final answer
    x = 260,147.40

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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.