Home / 390,482,878.62-538,864,894.26-214,273,822.80

Finding the Fourth Proportional to 390,482,878.62, 538,864,894.26 and 214,273,822.80

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Solution

The fourth proportional to 390,482,878.62, 538,864,894.26 and 214,273,822.80 is: 295,697,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,482,878.62 : 538,864,894.26 = 214,273,822.80 : x
  2. Step 2: Convert to fraction form
    390,482,878.62/538,864,894.26 = 214,273,822.80/x
  3. Step 3: Cross multiply
    390,482,878.62x = 538,864,894.26 × 214,273,822.80
  4. Step 4: Simplify right side
    390,482,878.62x = 115,464,640,865,807,984
  5. Step 5: Solve for x
    x = 115,464,640,865,807,984/390,482,878.62
  6. Step 6: Final answer
    x = 295,697,064.30

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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.