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Finding the Fourth Proportional to 484,178, 668,165.64 and 272,210

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Solution

The fourth proportional to 484,178, 668,165.64 and 272,210 is: 375,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,178 : 668,165.64 = 272,210 : x
  2. Step 2: Convert to fraction form
    484,178/668,165.64 = 272,210/x
  3. Step 3: Cross multiply
    484,178x = 668,165.64 × 272,210
  4. Step 4: Simplify right side
    484,178x = 181,881,368,864.40
  5. Step 5: Solve for x
    x = 181,881,368,864.40/484,178
  6. Step 6: Final answer
    x = 375,649.80

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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.