Home / 390,482,874.37-538,864,888.40-214,273,818.55

Finding the Fourth Proportional to 390,482,874.37, 538,864,888.40 and 214,273,818.55

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Solution

The fourth proportional to 390,482,874.37, 538,864,888.40 and 214,273,818.55 is: 295,697,058.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,482,874.37 : 538,864,888.40 = 214,273,818.55 : x
  2. Step 2: Convert to fraction form
    390,482,874.37/538,864,888.40 = 214,273,818.55/x
  3. Step 3: Cross multiply
    390,482,874.37x = 538,864,888.40 × 214,273,818.55
  4. Step 4: Simplify right side
    390,482,874.37x = 115,464,637,318,916,240
  5. Step 5: Solve for x
    x = 115,464,637,318,916,240/390,482,874.37
  6. Step 6: Final answer
    x = 295,697,058.43

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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.