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Finding the Fourth Proportional to 292,004.70, 438,007.05 and 290,036.40

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Solution

The fourth proportional to 292,004.70, 438,007.05 and 290,036.40 is: 435,054.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,004.70 : 438,007.05 = 290,036.40 : x
  2. Step 2: Convert to fraction form
    292,004.70/438,007.05 = 290,036.40/x
  3. Step 3: Cross multiply
    292,004.70x = 438,007.05 × 290,036.40
  4. Step 4: Simplify right side
    292,004.70x = 127,037,987,956.62
  5. Step 5: Solve for x
    x = 127,037,987,956.62/292,004.70
  6. Step 6: Final answer
    x = 435,054.60

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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.