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Finding the Fourth Proportional to 260,033.60, 390,050.40 and 147,670.40

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Solution

The fourth proportional to 260,033.60, 390,050.40 and 147,670.40 is: 221,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,033.60 : 390,050.40 = 147,670.40 : x
  2. Step 2: Convert to fraction form
    260,033.60/390,050.40 = 147,670.40/x
  3. Step 3: Cross multiply
    260,033.60x = 390,050.40 × 147,670.40
  4. Step 4: Simplify right side
    260,033.60x = 57,598,898,588.16
  5. Step 5: Solve for x
    x = 57,598,898,588.16/260,033.60
  6. Step 6: Final answer
    x = 221,505.60

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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.