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Finding the Fourth Proportional to 285,000.80, 427,400.40 and 97,968.80

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Solution

The fourth proportional to 285,000.80, 427,400.40 and 97,968.80 is: 146,918.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,000.80 : 427,400.40 = 97,968.80 : x
  2. Step 2: Convert to fraction form
    285,000.80/427,400.40 = 97,968.80/x
  3. Step 3: Cross multiply
    285,000.80x = 427,400.40 × 97,968.80
  4. Step 4: Simplify right side
    285,000.80x = 41,871,904,307.52
  5. Step 5: Solve for x
    x = 41,871,904,307.52/285,000.80
  6. Step 6: Final answer
    x = 146,918.55

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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.