Home / 278,783,999.60-418,175,999.40-249,558,681.20

Finding the Fourth Proportional to 278,783,999.60, 418,175,999.40 and 249,558,681.20

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Solution

The fourth proportional to 278,783,999.60, 418,175,999.40 and 249,558,681.20 is: 374,338,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,783,999.60 : 418,175,999.40 = 249,558,681.20 : x
  2. Step 2: Convert to fraction form
    278,783,999.60/418,175,999.40 = 249,558,681.20/x
  3. Step 3: Cross multiply
    278,783,999.60x = 418,175,999.40 × 249,558,681.20
  4. Step 4: Simplify right side
    278,783,999.60x = 104,359,450,919,755,984
  5. Step 5: Solve for x
    x = 104,359,450,919,755,984/278,783,999.60
  6. Step 6: Final answer
    x = 374,338,021.80

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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.