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Finding the Fourth Proportional to 525,801.76, 788,691.12 and 146,712.40

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Solution

The fourth proportional to 525,801.76, 788,691.12 and 146,712.40 is: 220,065.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,801.76 : 788,691.12 = 146,712.40 : x
  2. Step 2: Convert to fraction form
    525,801.76/788,691.12 = 146,712.40/x
  3. Step 3: Cross multiply
    525,801.76x = 788,691.12 × 146,712.40
  4. Step 4: Simplify right side
    525,801.76x = 115,710,767,073.89
  5. Step 5: Solve for x
    x = 115,710,767,073.89/525,801.76
  6. Step 6: Final answer
    x = 220,065.39

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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.