Home / 265,602,571.20-398,403,856.80-210,120,130.80

Finding the Fourth Proportional to 265,602,571.20, 398,403,856.80 and 210,120,130.80

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Solution

The fourth proportional to 265,602,571.20, 398,403,856.80 and 210,120,130.80 is: 315,180,196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,602,571.20 : 398,403,856.80 = 210,120,130.80 : x
  2. Step 2: Convert to fraction form
    265,602,571.20/398,403,856.80 = 210,120,130.80/x
  3. Step 3: Cross multiply
    265,602,571.20x = 398,403,856.80 × 210,120,130.80
  4. Step 4: Simplify right side
    265,602,571.20x = 83,712,670,502,040,480
  5. Step 5: Solve for x
    x = 83,712,670,502,040,480/265,602,571.20
  6. Step 6: Final answer
    x = 315,180,196.20

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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.