Home / 288,631.47-398,312.04-161,307.07

Finding the Fourth Proportional to 288,631.47, 398,312.04 and 161,307.07

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Solution

The fourth proportional to 288,631.47, 398,312.04 and 161,307.07 is: 222,604.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,631.47 : 398,312.04 = 161,307.07 : x
  2. Step 2: Convert to fraction form
    288,631.47/398,312.04 = 161,307.07/x
  3. Step 3: Cross multiply
    288,631.47x = 398,312.04 × 161,307.07
  4. Step 4: Simplify right side
    288,631.47x = 64,250,548,118.12
  5. Step 5: Solve for x
    x = 64,250,548,118.12/288,631.47
  6. Step 6: Final answer
    x = 222,604.10

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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.