Home / 387,089,123.36-534,182,055-210,878,566.70

Finding the Fourth Proportional to 387,089,123.36, 534,182,055 and 210,878,566.70

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Solution

The fourth proportional to 387,089,123.36, 534,182,055 and 210,878,566.70 is: 291,011,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,089,123.36 : 534,182,055 = 210,878,566.70 : x
  2. Step 2: Convert to fraction form
    387,089,123.36/534,182,055 = 210,878,566.70/x
  3. Step 3: Cross multiply
    387,089,123.36x = 534,182,055 × 210,878,566.70
  4. Step 4: Simplify right side
    387,089,123.36x = 112,647,546,115,260,560
  5. Step 5: Solve for x
    x = 112,647,546,115,260,560/387,089,123.36
  6. Step 6: Final answer
    x = 291,011,912.55

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1.5x scale

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.