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Finding the Fourth Proportional to 290,435.60, 435,653.40 and 243,779.60

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Solution

The fourth proportional to 290,435.60, 435,653.40 and 243,779.60 is: 365,669.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,435.60 : 435,653.40 = 243,779.60 : x
  2. Step 2: Convert to fraction form
    290,435.60/435,653.40 = 243,779.60/x
  3. Step 3: Cross multiply
    290,435.60x = 435,653.40 × 243,779.60
  4. Step 4: Simplify right side
    290,435.60x = 106,203,411,590.64
  5. Step 5: Solve for x
    x = 106,203,411,590.64/290,435.60
  6. Step 6: Final answer
    x = 365,669.40

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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.