Home / 229,985.08-317,376.90-128,008.91

Finding the Fourth Proportional to 229,985.08, 317,376.90 and 128,008.91

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Solution

The fourth proportional to 229,985.08, 317,376.90 and 128,008.91 is: 176,650.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,985.08 : 317,376.90 = 128,008.91 : x
  2. Step 2: Convert to fraction form
    229,985.08/317,376.90 = 128,008.91/x
  3. Step 3: Cross multiply
    229,985.08x = 317,376.90 × 128,008.91
  4. Step 4: Simplify right side
    229,985.08x = 40,627,071,028.18
  5. Step 5: Solve for x
    x = 40,627,071,028.18/229,985.08
  6. Step 6: Final answer
    x = 176,650.90

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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.