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Finding the Fourth Proportional to 600,012.40, 900,018.60 and 156,780.40

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Solution

The fourth proportional to 600,012.40, 900,018.60 and 156,780.40 is: 235,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    600,012.40 : 900,018.60 = 156,780.40 : x
  2. Step 2: Convert to fraction form
    600,012.40/900,018.60 = 156,780.40/x
  3. Step 3: Cross multiply
    600,012.40x = 900,018.60 × 156,780.40
  4. Step 4: Simplify right side
    600,012.40x = 141,105,276,115.44
  5. Step 5: Solve for x
    x = 141,105,276,115.44/600,012.40
  6. Step 6: Final answer
    x = 235,170.60

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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.