Home / 391,427,152.40-540,171,605.75-230,498,157.08

Finding the Fourth Proportional to 391,427,152.40, 540,171,605.75 and 230,498,157.08

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Solution

The fourth proportional to 391,427,152.40, 540,171,605.75 and 230,498,157.08 is: 318,088,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,427,152.40 : 540,171,605.75 = 230,498,157.08 : x
  2. Step 2: Convert to fraction form
    391,427,152.40/540,171,605.75 = 230,498,157.08/x
  3. Step 3: Cross multiply
    391,427,152.40x = 540,171,605.75 × 230,498,157.08
  4. Step 4: Simplify right side
    391,427,152.40x = 124,508,559,628,465,984
  5. Step 5: Solve for x
    x = 124,508,559,628,465,984/391,427,152.40
  6. Step 6: Final answer
    x = 318,088,714.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.