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Finding the Third Proportional to 248,616,818.75 and 390,006,420.01

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Solution

The third proportional to 248,616,818.75 and 390,006,420.01 is: 611,804,979.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,616,818.75 : 390,006,420.01 = 390,006,420.01 : x
  2. Step 2: Convert to fraction form
    248,616,818.75/390,006,420.01 = 390,006,420.01/x
  3. Step 3: Cross multiply
    248,616,818.75x = 390,006,420.01 × 390,006,420.01
  4. Step 4: Simplify right side
    248,616,818.75x = 152,105,007,650,342,528
  5. Step 5: Solve for x
    x = 152,105,007,650,342,528/248,616,818.75
  6. Step 6: Final answer
    x = 611,804,979.30

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.