Home / 290,324,108.40-435,486,162.60-128,766,044.40

Finding the Fourth Proportional to 290,324,108.40, 435,486,162.60 and 128,766,044.40

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Solution

The fourth proportional to 290,324,108.40, 435,486,162.60 and 128,766,044.40 is: 193,149,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,324,108.40 : 435,486,162.60 = 128,766,044.40 : x
  2. Step 2: Convert to fraction form
    290,324,108.40/435,486,162.60 = 128,766,044.40/x
  3. Step 3: Cross multiply
    290,324,108.40x = 435,486,162.60 × 128,766,044.40
  4. Step 4: Simplify right side
    290,324,108.40x = 56,075,830,548,937,224
  5. Step 5: Solve for x
    x = 56,075,830,548,937,224/290,324,108.40
  6. Step 6: Final answer
    x = 193,149,066.60

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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.