Home / 279,076,968-385,126,215.84-155,346,874.38

Finding the Fourth Proportional to 279,076,968, 385,126,215.84 and 155,346,874.38

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Solution

The fourth proportional to 279,076,968, 385,126,215.84 and 155,346,874.38 is: 214,378,686.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,076,968 : 385,126,215.84 = 155,346,874.38 : x
  2. Step 2: Convert to fraction form
    279,076,968/385,126,215.84 = 155,346,874.38/x
  3. Step 3: Cross multiply
    279,076,968x = 385,126,215.84 × 155,346,874.38
  4. Step 4: Simplify right side
    279,076,968x = 59,828,153,872,541,240
  5. Step 5: Solve for x
    x = 59,828,153,872,541,240/279,076,968
  6. Step 6: Final answer
    x = 214,378,686.64

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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.