Home / 256,406,554.20-384,609,831.30-74,659,661.40

Finding the Fourth Proportional to 256,406,554.20, 384,609,831.30 and 74,659,661.40

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Solution

The fourth proportional to 256,406,554.20, 384,609,831.30 and 74,659,661.40 is: 111,989,492.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,406,554.20 : 384,609,831.30 = 74,659,661.40 : x
  2. Step 2: Convert to fraction form
    256,406,554.20/384,609,831.30 = 74,659,661.40/x
  3. Step 3: Cross multiply
    256,406,554.20x = 384,609,831.30 × 74,659,661.40
  4. Step 4: Simplify right side
    256,406,554.20x = 28,714,839,775,969,124
  5. Step 5: Solve for x
    x = 28,714,839,775,969,124/256,406,554.20
  6. Step 6: Final answer
    x = 111,989,492.10

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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.