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Finding the Fourth Proportional to 368,779.20, 553,168.80 and 235,809.60

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Solution

The fourth proportional to 368,779.20, 553,168.80 and 235,809.60 is: 353,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,779.20 : 553,168.80 = 235,809.60 : x
  2. Step 2: Convert to fraction form
    368,779.20/553,168.80 = 235,809.60/x
  3. Step 3: Cross multiply
    368,779.20x = 553,168.80 × 235,809.60
  4. Step 4: Simplify right side
    368,779.20x = 130,442,513,460.48
  5. Step 5: Solve for x
    x = 130,442,513,460.48/368,779.20
  6. Step 6: Final answer
    x = 353,714.40

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1.5x scale

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.