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Finding the Fourth Proportional to 152,387.20, 212,817.20 and 152,387.20

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Solution

The fourth proportional to 152,387.20, 212,817.20 and 152,387.20 is: 212,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,387.20 : 212,817.20 = 152,387.20 : x
  2. Step 2: Convert to fraction form
    152,387.20/212,817.20 = 152,387.20/x
  3. Step 3: Cross multiply
    152,387.20x = 212,817.20 × 152,387.20
  4. Step 4: Simplify right side
    152,387.20x = 32,430,617,219.84
  5. Step 5: Solve for x
    x = 32,430,617,219.84/152,387.20
  6. Step 6: Final answer
    x = 212,817.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.