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Finding the Fourth Proportional to 455,148.77, 627,750.26 and 291,820.89

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Solution

The fourth proportional to 455,148.77, 627,750.26 and 291,820.89 is: 402,485.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,148.77 : 627,750.26 = 291,820.89 : x
  2. Step 2: Convert to fraction form
    455,148.77/627,750.26 = 291,820.89/x
  3. Step 3: Cross multiply
    455,148.77x = 627,750.26 × 291,820.89
  4. Step 4: Simplify right side
    455,148.77x = 183,190,639,570.93
  5. Step 5: Solve for x
    x = 183,190,639,570.93/455,148.77
  6. Step 6: Final answer
    x = 402,485.19

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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.