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Finding the Fourth Proportional to 153,758.40, 230,560.80 and 70,558.40

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Solution

The fourth proportional to 153,758.40, 230,560.80 and 70,558.40 is: 105,802.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,758.40 : 230,560.80 = 70,558.40 : x
  2. Step 2: Convert to fraction form
    153,758.40/230,560.80 = 70,558.40/x
  3. Step 3: Cross multiply
    153,758.40x = 230,560.80 × 70,558.40
  4. Step 4: Simplify right side
    153,758.40x = 16,268,001,150.72
  5. Step 5: Solve for x
    x = 16,268,001,150.72/153,758.40
  6. Step 6: Final answer
    x = 105,802.36

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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.