Home / 371,048,021.20-556,572,031.80-128,735,419.60

Finding the Fourth Proportional to 371,048,021.20, 556,572,031.80 and 128,735,419.60

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Solution

The fourth proportional to 371,048,021.20, 556,572,031.80 and 128,735,419.60 is: 193,103,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,048,021.20 : 556,572,031.80 = 128,735,419.60 : x
  2. Step 2: Convert to fraction form
    371,048,021.20/556,572,031.80 = 128,735,419.60/x
  3. Step 3: Cross multiply
    371,048,021.20x = 556,572,031.80 × 128,735,419.60
  4. Step 4: Simplify right side
    371,048,021.20x = 71,650,534,051,397,536
  5. Step 5: Solve for x
    x = 71,650,534,051,397,536/371,048,021.20
  6. Step 6: Final answer
    x = 193,103,129.40

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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.