Home / 315,039,400.52-472,559,100.77-85,008,116.12

Finding the Fourth Proportional to 315,039,400.52, 472,559,100.77 and 85,008,116.12

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Solution

The fourth proportional to 315,039,400.52, 472,559,100.77 and 85,008,116.12 is: 127,512,174.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,039,400.52 : 472,559,100.77 = 85,008,116.12 : x
  2. Step 2: Convert to fraction form
    315,039,400.52/472,559,100.77 = 85,008,116.12/x
  3. Step 3: Cross multiply
    315,039,400.52x = 472,559,100.77 × 85,008,116.12
  4. Step 4: Simplify right side
    315,039,400.52x = 40,171,358,909,668,664
  5. Step 5: Solve for x
    x = 40,171,358,909,668,664/315,039,400.52
  6. Step 6: Final answer
    x = 127,512,174.17

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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.