Home / 286,785,762.05-428,546,048.94-215,334,758.30

Finding the Fourth Proportional to 286,785,762.05, 428,546,048.94 and 215,334,758.30

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Solution

The fourth proportional to 286,785,762.05, 428,546,048.94 and 215,334,758.30 is: 321,776,294.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,785,762.05 : 428,546,048.94 = 215,334,758.30 : x
  2. Step 2: Convert to fraction form
    286,785,762.05/428,546,048.94 = 215,334,758.30/x
  3. Step 3: Cross multiply
    286,785,762.05x = 428,546,048.94 × 215,334,758.30
  4. Step 4: Simplify right side
    286,785,762.05x = 92,280,859,866,772,128
  5. Step 5: Solve for x
    x = 92,280,859,866,772,128/286,785,762.05
  6. Step 6: Final answer
    x = 321,776,294.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.