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Finding the Fourth Proportional to 472,407.95, 651,935.39 and 291,239.57

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Solution

The fourth proportional to 472,407.95, 651,935.39 and 291,239.57 is: 401,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,407.95 : 651,935.39 = 291,239.57 : x
  2. Step 2: Convert to fraction form
    472,407.95/651,935.39 = 291,239.57/x
  3. Step 3: Cross multiply
    472,407.95x = 651,935.39 × 291,239.57
  4. Step 4: Simplify right side
    472,407.95x = 189,869,377,935.51
  5. Step 5: Solve for x
    x = 189,869,377,935.51/472,407.95
  6. Step 6: Final answer
    x = 401,918.26

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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.