Home / 387,089,124.36-534,182,056.38-210,878,567.70

Finding the Fourth Proportional to 387,089,124.36, 534,182,056.38 and 210,878,567.70

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Solution

The fourth proportional to 387,089,124.36, 534,182,056.38 and 210,878,567.70 is: 291,011,913.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,089,124.36 : 534,182,056.38 = 210,878,567.70 : x
  2. Step 2: Convert to fraction form
    387,089,124.36/534,182,056.38 = 210,878,567.70/x
  3. Step 3: Cross multiply
    387,089,124.36x = 534,182,056.38 × 210,878,567.70
  4. Step 4: Simplify right side
    387,089,124.36x = 112,647,546,940,455,040
  5. Step 5: Solve for x
    x = 112,647,546,940,455,040/387,089,124.36
  6. Step 6: Final answer
    x = 291,011,913.93

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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.