Finding the Fourth Proportional to 257,916,831.10, 386,875,246.65 and 243,136,210.30
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Solution
The fourth proportional to 257,916,831.10, 386,875,246.65 and 243,136,210.30 is: 364,704,315.45
Step by Step Solution
- Step 1: Write the proportion equation
257,916,831.10 : 386,875,246.65 = 243,136,210.30 : x - Step 2: Convert to fraction form
257,916,831.10/386,875,246.65 = 243,136,210.30/x - Step 3: Cross multiply
257,916,831.10x = 386,875,246.65 × 243,136,210.30 - Step 4: Simplify right side
257,916,831.10x = 94,063,381,329,358,768 - Step 5: Solve for x
x = 94,063,381,329,358,768/257,916,831.10 - Step 6: Final answer
x = 364,704,315.45
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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.