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Finding the Fourth Proportional to 210,323,151.70, 315,484,727.55 and 210,323,151.70

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Solution

The fourth proportional to 210,323,151.70, 315,484,727.55 and 210,323,151.70 is: 315,484,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,323,151.70 : 315,484,727.55 = 210,323,151.70 : x
  2. Step 2: Convert to fraction form
    210,323,151.70/315,484,727.55 = 210,323,151.70/x
  3. Step 3: Cross multiply
    210,323,151.70x = 315,484,727.55 × 210,323,151.70
  4. Step 4: Simplify right side
    210,323,151.70x = 66,353,742,211,531,816
  5. Step 5: Solve for x
    x = 66,353,742,211,531,816/210,323,151.70
  6. Step 6: Final answer
    x = 315,484,727.55

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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.