Home / 515,101,640-772,970,266.72-238,701,334.88

Finding the Fourth Proportional to 515,101,640, 772,970,266.72 and 238,701,334.88

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Solution

The fourth proportional to 515,101,640, 772,970,266.72 and 238,701,334.88 is: 358,199,275.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,101,640 : 772,970,266.72 = 238,701,334.88 : x
  2. Step 2: Convert to fraction form
    515,101,640/772,970,266.72 = 238,701,334.88/x
  3. Step 3: Cross multiply
    515,101,640x = 772,970,266.72 × 238,701,334.88
  4. Step 4: Simplify right side
    515,101,640x = 184,509,034,487,420,128
  5. Step 5: Solve for x
    x = 184,509,034,487,420,128/515,101,640
  6. Step 6: Final answer
    x = 358,199,275.95

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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.