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Finding the Fourth Proportional to 147,630.40, 221,445.60 and 145,038.40

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Solution

The fourth proportional to 147,630.40, 221,445.60 and 145,038.40 is: 217,557.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,630.40 : 221,445.60 = 145,038.40 : x
  2. Step 2: Convert to fraction form
    147,630.40/221,445.60 = 145,038.40/x
  3. Step 3: Cross multiply
    147,630.40x = 221,445.60 × 145,038.40
  4. Step 4: Simplify right side
    147,630.40x = 32,118,115,511.04
  5. Step 5: Solve for x
    x = 32,118,115,511.04/147,630.40
  6. Step 6: Final answer
    x = 217,557.60

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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.