Home / 388,843,940-536,351,795.76-249,393,821.60

Finding the Fourth Proportional to 388,843,940, 536,351,795.76 and 249,393,821.60

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Solution

The fourth proportional to 388,843,940, 536,351,795.76 and 249,393,821.60 is: 344,001,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,843,940 : 536,351,795.76 = 249,393,821.60 : x
  2. Step 2: Convert to fraction form
    388,843,940/536,351,795.76 = 249,393,821.60/x
  3. Step 3: Cross multiply
    388,843,940x = 536,351,795.76 × 249,393,821.60
  4. Step 4: Simplify right side
    388,843,940x = 133,762,824,066,609,072
  5. Step 5: Solve for x
    x = 133,762,824,066,609,072/388,843,940
  6. Step 6: Final answer
    x = 344,001,308.25

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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.