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Finding the Fourth Proportional to 162,012.80, 243,019.20 and 155,014.40

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Solution

The fourth proportional to 162,012.80, 243,019.20 and 155,014.40 is: 232,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,012.80 : 243,019.20 = 155,014.40 : x
  2. Step 2: Convert to fraction form
    162,012.80/243,019.20 = 155,014.40/x
  3. Step 3: Cross multiply
    162,012.80x = 243,019.20 × 155,014.40
  4. Step 4: Simplify right side
    162,012.80x = 37,671,475,476.48
  5. Step 5: Solve for x
    x = 37,671,475,476.48/162,012.80
  6. Step 6: Final answer
    x = 232,521.60

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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.