Home / 256,634,831.04-384,798,516.12-81,682,294.80

Finding the Fourth Proportional to 256,634,831.04, 384,798,516.12 and 81,682,294.80

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Solution

The fourth proportional to 256,634,831.04, 384,798,516.12 and 81,682,294.80 is: 122,474,512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,634,831.04 : 384,798,516.12 = 81,682,294.80 : x
  2. Step 2: Convert to fraction form
    256,634,831.04/384,798,516.12 = 81,682,294.80/x
  3. Step 3: Cross multiply
    256,634,831.04x = 384,798,516.12 × 81,682,294.80
  4. Step 4: Simplify right side
    256,634,831.04x = 31,431,225,832,316,392
  5. Step 5: Solve for x
    x = 31,431,225,832,316,392/256,634,831.04
  6. Step 6: Final answer
    x = 122,474,512.54

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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.