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Finding the Fourth Proportional to 210,347,685.80, 315,521,528.70 and 97,101,477.80

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Solution

The fourth proportional to 210,347,685.80, 315,521,528.70 and 97,101,477.80 is: 145,652,216.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,347,685.80 : 315,521,528.70 = 97,101,477.80 : x
  2. Step 2: Convert to fraction form
    210,347,685.80/315,521,528.70 = 97,101,477.80/x
  3. Step 3: Cross multiply
    210,347,685.80x = 315,521,528.70 × 97,101,477.80
  4. Step 4: Simplify right side
    210,347,685.80x = 30,637,606,714,485,112
  5. Step 5: Solve for x
    x = 30,637,606,714,485,112/210,347,685.80
  6. Step 6: Final answer
    x = 145,652,216.70

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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.