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Finding the Fourth Proportional to 355,707.61, 533,562.33 and 145,345.55

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Solution

The fourth proportional to 355,707.61, 533,562.33 and 145,345.55 is: 218,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,707.61 : 533,562.33 = 145,345.55 : x
  2. Step 2: Convert to fraction form
    355,707.61/533,562.33 = 145,345.55/x
  3. Step 3: Cross multiply
    355,707.61x = 533,562.33 × 145,345.55
  4. Step 4: Simplify right side
    355,707.61x = 77,550,910,313.13
  5. Step 5: Solve for x
    x = 77,550,910,313.13/355,707.61
  6. Step 6: Final answer
    x = 218,018.70

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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.