Home / 292,039,144.40-438,030,247.80-76,628,392.40

Finding the Fourth Proportional to 292,039,144.40, 438,030,247.80 and 76,628,392.40

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Solution

The fourth proportional to 292,039,144.40, 438,030,247.80 and 76,628,392.40 is: 114,935,118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,039,144.40 : 438,030,247.80 = 76,628,392.40 : x
  2. Step 2: Convert to fraction form
    292,039,144.40/438,030,247.80 = 76,628,392.40/x
  3. Step 3: Cross multiply
    292,039,144.40x = 438,030,247.80 × 76,628,392.40
  4. Step 4: Simplify right side
    292,039,144.40x = 33,565,553,711,487,640
  5. Step 5: Solve for x
    x = 33,565,553,711,487,640/292,039,144.40
  6. Step 6: Final answer
    x = 114,935,118.65

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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.