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Finding the Fourth Proportional to 360,056.40, 540,084.60 and 290,072.40

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Solution

The fourth proportional to 360,056.40, 540,084.60 and 290,072.40 is: 435,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,056.40 : 540,084.60 = 290,072.40 : x
  2. Step 2: Convert to fraction form
    360,056.40/540,084.60 = 290,072.40/x
  3. Step 3: Cross multiply
    360,056.40x = 540,084.60 × 290,072.40
  4. Step 4: Simplify right side
    360,056.40x = 156,663,636,125.04
  5. Step 5: Solve for x
    x = 156,663,636,125.04/360,056.40
  6. Step 6: Final answer
    x = 435,108.60

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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.