Home / 247,302,015.80-370,953,023.70-85,760,281.40

Finding the Fourth Proportional to 247,302,015.80, 370,953,023.70 and 85,760,281.40

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Solution

The fourth proportional to 247,302,015.80, 370,953,023.70 and 85,760,281.40 is: 128,640,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,302,015.80 : 370,953,023.70 = 85,760,281.40 : x
  2. Step 2: Convert to fraction form
    247,302,015.80/370,953,023.70 = 85,760,281.40/x
  3. Step 3: Cross multiply
    247,302,015.80x = 370,953,023.70 × 85,760,281.40
  4. Step 4: Simplify right side
    247,302,015.80x = 31,813,035,698,692,872
  5. Step 5: Solve for x
    x = 31,813,035,698,692,872/247,302,015.80
  6. Step 6: Final answer
    x = 128,640,422.10

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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.