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Finding the Fourth Proportional to 218,575.40, 301,639.95 and 123,085.51

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Solution

The fourth proportional to 218,575.40, 301,639.95 and 123,085.51 is: 169,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,575.40 : 301,639.95 = 123,085.51 : x
  2. Step 2: Convert to fraction form
    218,575.40/301,639.95 = 123,085.51/x
  3. Step 3: Cross multiply
    218,575.40x = 301,639.95 × 123,085.51
  4. Step 4: Simplify right side
    218,575.40x = 37,127,506,328.02
  5. Step 5: Solve for x
    x = 37,127,506,328.02/218,575.40
  6. Step 6: Final answer
    x = 169,861.33

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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.