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Finding the Fourth Proportional to 243,000.30, 364,500.45 and 153,989.40

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Solution

The fourth proportional to 243,000.30, 364,500.45 and 153,989.40 is: 230,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,000.30 : 364,500.45 = 153,989.40 : x
  2. Step 2: Convert to fraction form
    243,000.30/364,500.45 = 153,989.40/x
  3. Step 3: Cross multiply
    243,000.30x = 364,500.45 × 153,989.40
  4. Step 4: Simplify right side
    243,000.30x = 56,129,205,595.23
  5. Step 5: Solve for x
    x = 56,129,205,595.23/243,000.30
  6. Step 6: Final answer
    x = 230,984.10

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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.