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Finding the Fourth Proportional to 528,095.25, 728,771.63 and 286,377.76

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Solution

The fourth proportional to 528,095.25, 728,771.63 and 286,377.76 is: 395,201.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,095.25 : 728,771.63 = 286,377.76 : x
  2. Step 2: Convert to fraction form
    528,095.25/728,771.63 = 286,377.76/x
  3. Step 3: Cross multiply
    528,095.25x = 728,771.63 × 286,377.76
  4. Step 4: Simplify right side
    528,095.25x = 208,703,983,307.09
  5. Step 5: Solve for x
    x = 208,703,983,307.09/528,095.25
  6. Step 6: Final answer
    x = 395,201.41

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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.