Home / 211,548,356.40-317,322,534.60-120,681,130.80

Finding the Fourth Proportional to 211,548,356.40, 317,322,534.60 and 120,681,130.80

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Solution

The fourth proportional to 211,548,356.40, 317,322,534.60 and 120,681,130.80 is: 181,021,696.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,548,356.40 : 317,322,534.60 = 120,681,130.80 : x
  2. Step 2: Convert to fraction form
    211,548,356.40/317,322,534.60 = 120,681,130.80/x
  3. Step 3: Cross multiply
    211,548,356.40x = 317,322,534.60 × 120,681,130.80
  4. Step 4: Simplify right side
    211,548,356.40x = 38,294,842,303,850,128
  5. Step 5: Solve for x
    x = 38,294,842,303,850,128/211,548,356.40
  6. Step 6: Final answer
    x = 181,021,696.20

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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.