Home / 315,572,885.47-473,359,330.10-85,541,969.22

Finding the Fourth Proportional to 315,572,885.47, 473,359,330.10 and 85,541,969.22

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Solution

The fourth proportional to 315,572,885.47, 473,359,330.10 and 85,541,969.22 is: 128,312,954.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,572,885.47 : 473,359,330.10 = 85,541,969.22 : x
  2. Step 2: Convert to fraction form
    315,572,885.47/473,359,330.10 = 85,541,969.22/x
  3. Step 3: Cross multiply
    315,572,885.47x = 473,359,330.10 × 85,541,969.22
  4. Step 4: Simplify right side
    315,572,885.47x = 40,492,089,245,414,024
  5. Step 5: Solve for x
    x = 40,492,089,245,414,024/315,572,885.47
  6. Step 6: Final answer
    x = 128,312,954.34

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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.