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Finding the Fourth Proportional to 318,878,461.60, 478,317,692.40 and 241,784,087.20

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Solution

The fourth proportional to 318,878,461.60, 478,317,692.40 and 241,784,087.20 is: 362,676,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,878,461.60 : 478,317,692.40 = 241,784,087.20 : x
  2. Step 2: Convert to fraction form
    318,878,461.60/478,317,692.40 = 241,784,087.20/x
  3. Step 3: Cross multiply
    318,878,461.60x = 478,317,692.40 × 241,784,087.20
  4. Step 4: Simplify right side
    318,878,461.60x = 115,649,606,648,544,368
  5. Step 5: Solve for x
    x = 115,649,606,648,544,368/318,878,461.60
  6. Step 6: Final answer
    x = 362,676,130.80

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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.