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Finding the Fourth Proportional to 290,666.60, 435,999.90 and 245,047.40

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Solution

The fourth proportional to 290,666.60, 435,999.90 and 245,047.40 is: 367,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,666.60 : 435,999.90 = 245,047.40 : x
  2. Step 2: Convert to fraction form
    290,666.60/435,999.90 = 245,047.40/x
  3. Step 3: Cross multiply
    290,666.60x = 435,999.90 × 245,047.40
  4. Step 4: Simplify right side
    290,666.60x = 106,840,641,895.26
  5. Step 5: Solve for x
    x = 106,840,641,895.26/290,666.60
  6. Step 6: Final answer
    x = 367,571.10

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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.