Home / 390,482,873.37-538,864,887.02-214,273,817.55

Finding the Fourth Proportional to 390,482,873.37, 538,864,887.02 and 214,273,817.55

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Solution

The fourth proportional to 390,482,873.37, 538,864,887.02 and 214,273,817.55 is: 295,697,057.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,482,873.37 : 538,864,887.02 = 214,273,817.55 : x
  2. Step 2: Convert to fraction form
    390,482,873.37/538,864,887.02 = 214,273,817.55/x
  3. Step 3: Cross multiply
    390,482,873.37x = 538,864,887.02 × 214,273,817.55
  4. Step 4: Simplify right side
    390,482,873.37x = 115,464,636,484,353,472
  5. Step 5: Solve for x
    x = 115,464,636,484,353,472/390,482,873.37
  6. Step 6: Final answer
    x = 295,697,057.05

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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.