Home / 256,185,328.52-353,535,920.22-138,710,738.40

Finding the Fourth Proportional to 256,185,328.52, 353,535,920.22 and 138,710,738.40

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Solution

The fourth proportional to 256,185,328.52, 353,535,920.22 and 138,710,738.40 is: 191,420,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,185,328.52 : 353,535,920.22 = 138,710,738.40 : x
  2. Step 2: Convert to fraction form
    256,185,328.52/353,535,920.22 = 138,710,738.40/x
  3. Step 3: Cross multiply
    256,185,328.52x = 353,535,920.22 × 138,710,738.40
  4. Step 4: Simplify right side
    256,185,328.52x = 49,039,228,544,639,696
  5. Step 5: Solve for x
    x = 49,039,228,544,639,696/256,185,328.52
  6. Step 6: Final answer
    x = 191,420,909.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.