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Finding the Fourth Proportional to 152,386.20, 212,815.80 and 152,386.20

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Solution

The fourth proportional to 152,386.20, 212,815.80 and 152,386.20 is: 212,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,386.20 : 212,815.80 = 152,386.20 : x
  2. Step 2: Convert to fraction form
    152,386.20/212,815.80 = 152,386.20/x
  3. Step 3: Cross multiply
    152,386.20x = 212,815.80 × 152,386.20
  4. Step 4: Simplify right side
    152,386.20x = 32,430,191,061.96
  5. Step 5: Solve for x
    x = 32,430,191,061.96/152,386.20
  6. Step 6: Final answer
    x = 212,815.80

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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.