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Finding the Fourth Proportional to 528,366.66, 729,146.22 and 286,649.16

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Solution

The fourth proportional to 528,366.66, 729,146.22 and 286,649.16 is: 395,575.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,366.66 : 729,146.22 = 286,649.16 : x
  2. Step 2: Convert to fraction form
    528,366.66/729,146.22 = 286,649.16/x
  3. Step 3: Cross multiply
    528,366.66x = 729,146.22 × 286,649.16
  4. Step 4: Simplify right side
    528,366.66x = 209,009,151,480.18
  5. Step 5: Solve for x
    x = 209,009,151,480.18/528,366.66
  6. Step 6: Final answer
    x = 395,575.97

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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.