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Finding the Fourth Proportional to 489,917.70, 734,876.62 and 152,987.20

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Solution

The fourth proportional to 489,917.70, 734,876.62 and 152,987.20 is: 229,480.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,917.70 : 734,876.62 = 152,987.20 : x
  2. Step 2: Convert to fraction form
    489,917.70/734,876.62 = 152,987.20/x
  3. Step 3: Cross multiply
    489,917.70x = 734,876.62 × 152,987.20
  4. Step 4: Simplify right side
    489,917.70x = 112,426,714,219.60
  5. Step 5: Solve for x
    x = 112,426,714,219.60/489,917.70
  6. Step 6: Final answer
    x = 229,480.82

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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.