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Finding the Fourth Proportional to 312,038.55, 468,320.40 and 292,355.55

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Solution

The fourth proportional to 312,038.55, 468,320.40 and 292,355.55 is: 438,779.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,038.55 : 468,320.40 = 292,355.55 : x
  2. Step 2: Convert to fraction form
    312,038.55/468,320.40 = 292,355.55/x
  3. Step 3: Cross multiply
    312,038.55x = 468,320.40 × 292,355.55
  4. Step 4: Simplify right side
    312,038.55x = 136,916,068,118.22
  5. Step 5: Solve for x
    x = 136,916,068,118.22/312,038.55
  6. Step 6: Final answer
    x = 438,779.34

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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.