Home / 387,089,133.36-534,182,068.80-210,878,576.72

Finding the Fourth Proportional to 387,089,133.36, 534,182,068.80 and 210,878,576.72

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Solution

The fourth proportional to 387,089,133.36, 534,182,068.80 and 210,878,576.72 is: 291,011,926.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,089,133.36 : 534,182,068.80 = 210,878,576.72 : x
  2. Step 2: Convert to fraction form
    387,089,133.36/534,182,068.80 = 210,878,576.72/x
  3. Step 3: Cross multiply
    387,089,133.36x = 534,182,068.80 × 210,878,576.72
  4. Step 4: Simplify right side
    387,089,133.36x = 112,647,554,377,889,120
  5. Step 5: Solve for x
    x = 112,647,554,377,889,120/387,089,133.36
  6. Step 6: Final answer
    x = 291,011,926.37

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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.