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Finding the Fourth Proportional to 472,420.79, 708,925.07 and 191,938.04

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Solution

The fourth proportional to 472,420.79, 708,925.07 and 191,938.04 is: 288,026.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,420.79 : 708,925.07 = 191,938.04 : x
  2. Step 2: Convert to fraction form
    472,420.79/708,925.07 = 191,938.04/x
  3. Step 3: Cross multiply
    472,420.79x = 708,925.07 × 191,938.04
  4. Step 4: Simplify right side
    472,420.79x = 136,069,688,442.66
  5. Step 5: Solve for x
    x = 136,069,688,442.66/472,420.79
  6. Step 6: Final answer
    x = 288,026.46

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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.