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Finding the Fourth Proportional to 330,405.40, 495,280.05 and 152,602.30

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Solution

The fourth proportional to 330,405.40, 495,280.05 and 152,602.30 is: 228,751.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,405.40 : 495,280.05 = 152,602.30 : x
  2. Step 2: Convert to fraction form
    330,405.40/495,280.05 = 152,602.30/x
  3. Step 3: Cross multiply
    330,405.40x = 495,280.05 × 152,602.30
  4. Step 4: Simplify right side
    330,405.40x = 75,580,874,774.12
  5. Step 5: Solve for x
    x = 75,580,874,774.12/330,405.40
  6. Step 6: Final answer
    x = 228,751.94

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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.