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Finding the Fourth Proportional to 470,931.69, 706,422.04 and 155,413.20

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Solution

The fourth proportional to 470,931.69, 706,422.04 and 155,413.20 is: 233,127.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,931.69 : 706,422.04 = 155,413.20 : x
  2. Step 2: Convert to fraction form
    470,931.69/706,422.04 = 155,413.20/x
  3. Step 3: Cross multiply
    470,931.69x = 706,422.04 × 155,413.20
  4. Step 4: Simplify right side
    470,931.69x = 109,787,309,398.40
  5. Step 5: Solve for x
    x = 109,787,309,398.40/470,931.69
  6. Step 6: Final answer
    x = 233,127.89

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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.