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Finding the Fourth Proportional to 515,547.10, 774,013.20 and 302,533.30

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Solution

The fourth proportional to 515,547.10, 774,013.20 and 302,533.30 is: 454,206.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,547.10 : 774,013.20 = 302,533.30 : x
  2. Step 2: Convert to fraction form
    515,547.10/774,013.20 = 302,533.30/x
  3. Step 3: Cross multiply
    515,547.10x = 774,013.20 × 302,533.30
  4. Step 4: Simplify right side
    515,547.10x = 234,164,767,639.56
  5. Step 5: Solve for x
    x = 234,164,767,639.56/515,547.10
  6. Step 6: Final answer
    x = 454,206.35

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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.