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Finding the Fourth Proportional to 223,970.76, 309,079.66 and 123,368.76

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Solution

The fourth proportional to 223,970.76, 309,079.66 and 123,368.76 is: 170,248.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,970.76 : 309,079.66 = 123,368.76 : x
  2. Step 2: Convert to fraction form
    223,970.76/309,079.66 = 123,368.76/x
  3. Step 3: Cross multiply
    223,970.76x = 309,079.66 × 123,368.76
  4. Step 4: Simplify right side
    223,970.76x = 38,130,774,395.42
  5. Step 5: Solve for x
    x = 38,130,774,395.42/223,970.76
  6. Step 6: Final answer
    x = 170,248.89

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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.