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Finding the Fourth Proportional to 600,021.40, 900,041.70 and 156,789.40

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Solution

The fourth proportional to 600,021.40, 900,041.70 and 156,789.40 is: 235,186.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    600,021.40 : 900,041.70 = 156,789.40 : x
  2. Step 2: Convert to fraction form
    600,021.40/900,041.70 = 156,789.40/x
  3. Step 3: Cross multiply
    600,021.40x = 900,041.70 × 156,789.40
  4. Step 4: Simplify right side
    600,021.40x = 141,116,998,117.98
  5. Step 5: Solve for x
    x = 141,116,998,117.98/600,021.40
  6. Step 6: Final answer
    x = 235,186.61

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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.