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Finding the Fourth Proportional to 152,807.80, 229,211.70 and 139,029.70

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Solution

The fourth proportional to 152,807.80, 229,211.70 and 139,029.70 is: 208,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,807.80 : 229,211.70 = 139,029.70 : x
  2. Step 2: Convert to fraction form
    152,807.80/229,211.70 = 139,029.70/x
  3. Step 3: Cross multiply
    152,807.80x = 229,211.70 × 139,029.70
  4. Step 4: Simplify right side
    152,807.80x = 31,867,233,887.49
  5. Step 5: Solve for x
    x = 31,867,233,887.49/152,807.80
  6. Step 6: Final answer
    x = 208,544.55

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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.