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Finding the Fourth Proportional to 281,840.54, 388,939.03 and 152,779.51

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Solution

The fourth proportional to 281,840.54, 388,939.03 and 152,779.51 is: 210,835.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,840.54 : 388,939.03 = 152,779.51 : x
  2. Step 2: Convert to fraction form
    281,840.54/388,939.03 = 152,779.51/x
  3. Step 3: Cross multiply
    281,840.54x = 388,939.03 × 152,779.51
  4. Step 4: Simplify right side
    281,840.54x = 59,421,915,386.89
  5. Step 5: Solve for x
    x = 59,421,915,386.89/281,840.54
  6. Step 6: Final answer
    x = 210,835.23

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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.