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Finding the Fourth Proportional to 545,658,907.60, 818,488,361.40 and 157,494,401.20

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Solution

The fourth proportional to 545,658,907.60, 818,488,361.40 and 157,494,401.20 is: 236,241,601.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,658,907.60 : 818,488,361.40 = 157,494,401.20 : x
  2. Step 2: Convert to fraction form
    545,658,907.60/818,488,361.40 = 157,494,401.20/x
  3. Step 3: Cross multiply
    545,658,907.60x = 818,488,361.40 × 157,494,401.20
  4. Step 4: Simplify right side
    545,658,907.60x = 128,907,334,367,862,176
  5. Step 5: Solve for x
    x = 128,907,334,367,862,176/545,658,907.60
  6. Step 6: Final answer
    x = 236,241,601.80

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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.