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Finding the Fourth Proportional to 282,870.74, 390,363.01 and 155,554.58

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Solution

The fourth proportional to 282,870.74, 390,363.01 and 155,554.58 is: 214,666.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,870.74 : 390,363.01 = 155,554.58 : x
  2. Step 2: Convert to fraction form
    282,870.74/390,363.01 = 155,554.58/x
  3. Step 3: Cross multiply
    282,870.74x = 390,363.01 × 155,554.58
  4. Step 4: Simplify right side
    282,870.74x = 60,722,754,068.09
  5. Step 5: Solve for x
    x = 60,722,754,068.09/282,870.74
  6. Step 6: Final answer
    x = 214,666.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.