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Finding the Fourth Proportional to 210,804.02, 315,699.36 and 120,573.29

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Solution

The fourth proportional to 210,804.02, 315,699.36 and 120,573.29 is: 180,570.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,804.02 : 315,699.36 = 120,573.29 : x
  2. Step 2: Convert to fraction form
    210,804.02/315,699.36 = 120,573.29/x
  3. Step 3: Cross multiply
    210,804.02x = 315,699.36 × 120,573.29
  4. Step 4: Simplify right side
    210,804.02x = 38,064,910,823.19
  5. Step 5: Solve for x
    x = 38,064,910,823.19/210,804.02
  6. Step 6: Final answer
    x = 180,570.14

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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.