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Finding the Fourth Proportional to 268,871,703.60, 403,357,321.80 and 87,124,810.80

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Solution

The fourth proportional to 268,871,703.60, 403,357,321.80 and 87,124,810.80 is: 130,703,342.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,871,703.60 : 403,357,321.80 = 87,124,810.80 : x
  2. Step 2: Convert to fraction form
    268,871,703.60/403,357,321.80 = 87,124,810.80/x
  3. Step 3: Cross multiply
    268,871,703.60x = 403,357,321.80 × 87,124,810.80
  4. Step 4: Simplify right side
    268,871,703.60x = 35,142,430,346,619,716
  5. Step 5: Solve for x
    x = 35,142,430,346,619,716/268,871,703.60
  6. Step 6: Final answer
    x = 130,703,342.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.