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Finding the Fourth Proportional to 346,779.36, 520,319.43 and 122,300.28

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Solution

The fourth proportional to 346,779.36, 520,319.43 and 122,300.28 is: 183,503.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,779.36 : 520,319.43 = 122,300.28 : x
  2. Step 2: Convert to fraction form
    346,779.36/520,319.43 = 122,300.28/x
  3. Step 3: Cross multiply
    346,779.36x = 520,319.43 × 122,300.28
  4. Step 4: Simplify right side
    346,779.36x = 63,635,211,978.44
  5. Step 5: Solve for x
    x = 63,635,211,978.44/346,779.36
  6. Step 6: Final answer
    x = 183,503.46

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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.