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Finding the Fourth Proportional to 213,599.70, 320,140.35 and 95,145.30

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Solution

The fourth proportional to 213,599.70, 320,140.35 and 95,145.30 is: 142,602.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,599.70 : 320,140.35 = 95,145.30 : x
  2. Step 2: Convert to fraction form
    213,599.70/320,140.35 = 95,145.30/x
  3. Step 3: Cross multiply
    213,599.70x = 320,140.35 × 95,145.30
  4. Step 4: Simplify right side
    213,599.70x = 30,459,849,642.86
  5. Step 5: Solve for x
    x = 30,459,849,642.86/213,599.70
  6. Step 6: Final answer
    x = 142,602.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.