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Finding the Fourth Proportional to 421,779.04, 632,675.86 and 155,402.44

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Solution

The fourth proportional to 421,779.04, 632,675.86 and 155,402.44 is: 233,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,779.04 : 632,675.86 = 155,402.44 : x
  2. Step 2: Convert to fraction form
    421,779.04/632,675.86 = 155,402.44/x
  3. Step 3: Cross multiply
    421,779.04x = 632,675.86 × 155,402.44
  4. Step 4: Simplify right side
    421,779.04x = 98,319,372,373.10
  5. Step 5: Solve for x
    x = 98,319,372,373.10/421,779.04
  6. Step 6: Final answer
    x = 233,106.35

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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.