Home / 286,785,766.58-428,546,055.67-215,334,762.80

Finding the Fourth Proportional to 286,785,766.58, 428,546,055.67 and 215,334,762.80

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Solution

The fourth proportional to 286,785,766.58, 428,546,055.67 and 215,334,762.80 is: 321,776,301.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,785,766.58 : 428,546,055.67 = 215,334,762.80 : x
  2. Step 2: Convert to fraction form
    286,785,766.58/428,546,055.67 = 215,334,762.80/x
  3. Step 3: Cross multiply
    286,785,766.58x = 428,546,055.67 × 215,334,762.80
  4. Step 4: Simplify right side
    286,785,766.58x = 92,280,863,243,893,984
  5. Step 5: Solve for x
    x = 92,280,863,243,893,984/286,785,766.58
  6. Step 6: Final answer
    x = 321,776,301.33

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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.