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Finding the Fourth Proportional to 489,992.40, 676,208.59 and 272,217.51

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Solution

The fourth proportional to 489,992.40, 676,208.59 and 272,217.51 is: 375,670.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,992.40 : 676,208.59 = 272,217.51 : x
  2. Step 2: Convert to fraction form
    489,992.40/676,208.59 = 272,217.51/x
  3. Step 3: Cross multiply
    489,992.40x = 676,208.59 × 272,217.51
  4. Step 4: Simplify right side
    489,992.40x = 184,075,814,548.82
  5. Step 5: Solve for x
    x = 184,075,814,548.82/489,992.40
  6. Step 6: Final answer
    x = 375,670.76

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1.5x scale

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.