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Finding the Fourth Proportional to 287,501.04, 430,678.08 and 135,490.32

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Solution

The fourth proportional to 287,501.04, 430,678.08 and 135,490.32 is: 202,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,501.04 : 430,678.08 = 135,490.32 : x
  2. Step 2: Convert to fraction form
    287,501.04/430,678.08 = 135,490.32/x
  3. Step 3: Cross multiply
    287,501.04x = 430,678.08 × 135,490.32
  4. Step 4: Simplify right side
    287,501.04x = 58,352,710,876.19
  5. Step 5: Solve for x
    x = 58,352,710,876.19/287,501.04
  6. Step 6: Final answer
    x = 202,965.22

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1.5x scale

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.