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Finding the Fourth Proportional to 423,334.65, 634,839.29 and 153,383.46

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Solution

The fourth proportional to 423,334.65, 634,839.29 and 153,383.46 is: 230,016.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,334.65 : 634,839.29 = 153,383.46 : x
  2. Step 2: Convert to fraction form
    423,334.65/634,839.29 = 153,383.46/x
  3. Step 3: Cross multiply
    423,334.65x = 634,839.29 × 153,383.46
  4. Step 4: Simplify right side
    423,334.65x = 97,373,844,271.77
  5. Step 5: Solve for x
    x = 97,373,844,271.77/423,334.65
  6. Step 6: Final answer
    x = 230,016.24

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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.