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Finding the Fourth Proportional to 501,482.81, 692,058.43 and 275,128.31

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Solution

The fourth proportional to 501,482.81, 692,058.43 and 275,128.31 is: 379,683.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,482.81 : 692,058.43 = 275,128.31 : x
  2. Step 2: Convert to fraction form
    501,482.81/692,058.43 = 275,128.31/x
  3. Step 3: Cross multiply
    501,482.81x = 692,058.43 × 275,128.31
  4. Step 4: Simplify right side
    501,482.81x = 190,404,868,341.21
  5. Step 5: Solve for x
    x = 190,404,868,341.21/501,482.81
  6. Step 6: Final answer
    x = 379,683.74

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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.