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Finding the Third Proportional to 272,925,768 and 390,287,070

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Solution

The third proportional to 272,925,768 and 390,287,070 is: 558,115,117.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,925,768 : 390,287,070 = 390,287,070 : x
  2. Step 2: Convert to fraction form
    272,925,768/390,287,070 = 390,287,070/x
  3. Step 3: Cross multiply
    272,925,768x = 390,287,070 × 390,287,070
  4. Step 4: Simplify right side
    272,925,768x = 152,323,997,009,184,896
  5. Step 5: Solve for x
    x = 152,323,997,009,184,896/272,925,768
  6. Step 6: Final answer
    x = 558,115,117.25

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.