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Finding the Third Proportional to 145,117,020 and 315,742,236

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Solution

The third proportional to 145,117,020 and 315,742,236 is: 686,984,611.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,117,020 : 315,742,236 = 315,742,236 : x
  2. Step 2: Convert to fraction form
    145,117,020/315,742,236 = 315,742,236/x
  3. Step 3: Cross multiply
    145,117,020x = 315,742,236 × 315,742,236
  4. Step 4: Simplify right side
    145,117,020x = 99,693,159,594,279,696
  5. Step 5: Solve for x
    x = 99,693,159,594,279,696/145,117,020
  6. Step 6: Final answer
    x = 686,984,611.41

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.