Home / 385,397,476.47-531,834,263.53-209,181,722.94

Finding the Fourth Proportional to 385,397,476.47, 531,834,263.53 and 209,181,722.94

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Solution

The fourth proportional to 385,397,476.47, 531,834,263.53 and 209,181,722.94 is: 288,663,041.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,397,476.47 : 531,834,263.53 = 209,181,722.94 : x
  2. Step 2: Convert to fraction form
    385,397,476.47/531,834,263.53 = 209,181,722.94/x
  3. Step 3: Cross multiply
    385,397,476.47x = 531,834,263.53 × 209,181,722.94
  4. Step 4: Simplify right side
    385,397,476.47x = 111,250,007,563,208,448
  5. Step 5: Solve for x
    x = 111,250,007,563,208,448/385,397,476.47
  6. Step 6: Final answer
    x = 288,663,041.03

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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.