Home / 388,334,543.56-535,901,649.62-209,718,414.70

Finding the Fourth Proportional to 388,334,543.56, 535,901,649.62 and 209,718,414.70

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Solution

The fourth proportional to 388,334,543.56, 535,901,649.62 and 209,718,414.70 is: 289,411,401.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,334,543.56 : 535,901,649.62 = 209,718,414.70 : x
  2. Step 2: Convert to fraction form
    388,334,543.56/535,901,649.62 = 209,718,414.70/x
  3. Step 3: Cross multiply
    388,334,543.56x = 535,901,649.62 × 209,718,414.70
  4. Step 4: Simplify right side
    388,334,543.56x = 112,388,444,393,421,248
  5. Step 5: Solve for x
    x = 112,388,444,393,421,248/388,334,543.56
  6. Step 6: Final answer
    x = 289,411,401.22

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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.