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Finding the Fourth Proportional to 292,705.60, 438,734.40 and 115,153.60

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Solution

The fourth proportional to 292,705.60, 438,734.40 and 115,153.60 is: 172,602.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,705.60 : 438,734.40 = 115,153.60 : x
  2. Step 2: Convert to fraction form
    292,705.60/438,734.40 = 115,153.60/x
  3. Step 3: Cross multiply
    292,705.60x = 438,734.40 × 115,153.60
  4. Step 4: Simplify right side
    292,705.60x = 50,521,845,603.84
  5. Step 5: Solve for x
    x = 50,521,845,603.84/292,705.60
  6. Step 6: Final answer
    x = 172,602.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.