Home / 256,639,666.61-384,943,556.66-81,758,376.74

Finding the Fourth Proportional to 256,639,666.61, 384,943,556.66 and 81,758,376.74

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Solution

The fourth proportional to 256,639,666.61, 384,943,556.66 and 81,758,376.74 is: 122,632,486.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,639,666.61 : 384,943,556.66 = 81,758,376.74 : x
  2. Step 2: Convert to fraction form
    256,639,666.61/384,943,556.66 = 81,758,376.74/x
  3. Step 3: Cross multiply
    256,639,666.61x = 384,943,556.66 × 81,758,376.74
  4. Step 4: Simplify right side
    256,639,666.61x = 31,472,360,329,597,384
  5. Step 5: Solve for x
    x = 31,472,360,329,597,384/256,639,666.61
  6. Step 6: Final answer
    x = 122,632,486.03

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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.